Advanced African Mango
Money being taken from my account but no goods in return

I though I was purchasing a one off trial of Advanced African Mango pills, for which I paid for via the internet banking, and now $361 Aus. has been taken from my account but I have not received anything other than the one trial bottle of tablets, which did not work anyway, I cannot get in touch with this company to stop them direct debiting my account and costing me huge fees for overseas transations. Can I get my money back or at least stop them. Any help appreciated. Mary